An X-ray survey of distant rich clusters of galaxies with HEAO 1.
Abstract
The paper presents a 1-10-keV survey of distance class 4, 5, and 6 Abell clusters using the HEAO 1 NRL large area survey experiment. The survey is a little less than 1/30 of the Abell catalog. Eleven clusters are identified with X-ray sources, and X-ray upper limits are provided for 60 others.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- January 1980
- DOI:
- 10.1086/157638
- Bibcode:
- 1980ApJ...235..351U
- Keywords:
-
- Astronomical Catalogs;
- Galactic Clusters;
- Heao 1;
- X Ray Astronomy;
- Error Analysis;
- Size (Dimensions);
- Spaceborne Experiments;
- Uhuru Satellite;
- Astrophysics